The frequency response H (jω) of a continuous-time filter is shown in the figure below If the input to this system is then output will be

1.  

2.  

3.  

4.  None of these.

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4
Correct Answer :


Explanation :
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The frequency response H (jω) of a continuous-time filter is shown in the figure below If the input to the system is ,then the output will be

1.  

2.  

3.  

4.  None of these

View Answer  
4
Correct Answer :

None of these


Explanation :
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Consider a casual LTI system with frequency response This system produces the output to input x (t) as follows y (t) =e-2t u(t)-e-4t u(t) he input x (t) is

1.  (2e-4t-3e-3t)u(t)

2.   e-4tu(t)

3.  (3e-4t-2e-3t)u(t)

4.  -e-4t u (t).

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4
Correct Answer :

 e-4tu(t)


Explanation :
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A real and non-negative signal x (t) has Fourier transform X (jω). The following facts are given F-1(1+jω)X(jω)=Ae-2tu(t), where is constant The signal x (t) may be

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4.  

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4
Correct Answer :


Explanation :
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Consider a continuous-time signal x (t) whose magnitude and phase spectra are as follows: |X (ω) |2=2{u (ω+3)-u (ω-3)},

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4
Correct Answer :


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The frequency response of a casual and stable LTI system is The group delay of the system is

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2.  

3.  

4.  

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4
Correct Answer :


Explanation :
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Determine-time Fourier transform for the signal x [n] = {-2, -1, 0, 1, 2} will be

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
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Determine-time Fourier transform for the signal will be

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
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The signal having the Fourier transform will be

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
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The signal having the Fourier transformwill be

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
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